A 400-G Block of Ice at - $15.00 ^ { \circ } \mathrm { C }$

question 58

Multiple Choice

A 40.0-g block of ice at - $15.00 ^ { \circ } \mathrm { C }$ is dropped into a calorimeter (of negligible heat capacity) containing water at $15.00 ^ { \circ } \mathrm { C }$ When equilibrium is reached, the final temperature is $8.00 ^ { \circ } \mathrm { C }$ How much water did the calorimeter contain initially? The specific heat of ice is $2090 \mathrm {~J} / \mathrm { kg } \cdot \mathrm { K }$ that of water is $4186 \mathrm {~J} / \mathrm { kg } \cdot \mathrm { K }$ and the latent heat of fusion of water is $33.5 \times 10 ^ { 4 } \mathrm {~J} / \mathrm { kg }$

• A) 302 g
• B) 546 g
• C) 634 g
• D) 405 g
• E) 345 g

---

Definitions:

Spillover Effect

The phenomenon where an emotional reaction to one event spills over and influences the response to another event.

Guilty Knowledge Test

A psychological assessment that measures physiological responses to recognize familiarity with information that should only be known to the guilty party.

Polygraph

A polygraph, commonly known as a lie detector, is an instrument that measures and records several physiological indices such as blood pressure, pulse, respiration, and skin conductivity while the subject is asked a series of questions.

Arousal Hypothesis

A theory suggesting that there is an optimal level of arousal for optimal performance, with too little or too much arousal leading to decreased performance.